Paradise Datacom 4 RU Chassis, Руководство по эксплуатации

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4 RU SSPA Chassis Operations Manual 201627 REV X 59
Both SSPAs constantly monitor the waveguide switch position. The proper position for
the online SSPA is determined by the “Unit Status” setting. If the selected SSPA is
configured as “HPA1,” it will drive the RF switch to Position 1 to set itself to the on-line
state. Selecting unit status to “HPA2” will configure that SSPA to drive the switch to
Position 2 for the on-line state. In “Auto” mode, the online SSPA will make two
attempts to force the switch to take proper position before accepting its new state.
4.1 Hardware
Two Teledyne Paradise Datacom Rack Mount SSPA units are used for a 1:1
redundant configuration. The units are connected to each other through a link cable,
which allows the exchange of online/standby status between SSPAs.
Both SSPA units are connected to the waveguide switch through a Y-cable. This
allows either amplifier to drive the switch to its proper position. Each unit must be
configured with a unique identity. If one SSPA is configured as “HPA1”, the other
should be configured as “HPA2”. Both SSPAs must be set to 1:1 Redundancy mode.
Figure 4-2
shows a 400W C-Band 1:1 Redundant System in a cabinet with an RCP2-
1100 Redundant Controller. The inset is a cabinet-ready 200W C-Band 1:1 System.
4.1.1 Power Supply
Each SSPA may (depending on the SSPA power level) contain up to two 28V power
supplies, which can supply power to a waveguide switch. The state of the 28V power
supplies (referred to as “Boost1” and “Boost2”) can be monitored from the front panel
and through remote serial protocol. Power supplies are fully protected from over-
current and over-voltage conditions and can reliably output up to 3A of DC current.
4.1.2 RF Switch
The SSPA redundant system controls a –28V waveguide/coaxial switch using the 6-pin
rear panel connector J3. The switches are controlled by ap28V to the common
of the switch and pulsing either position to the ground. The system then verifies the
position of the switch.
4.1.3 Switch Connector
The 6-pin connector J3, Molex P/N 43810-002 can be located on the SSPA rear panel.
This connector is used to interface with the RF switch. Teledyne Paradise Datacom
recommends the use of following parts to build a mating pair to this connector (all P/N
by Molex): Pin Crimp: 39-00-0039; receptacle: 39-01-2060; strain relief: 15-04-0296.
Table 4-1
shows the proper wiring to the MS3116F10-6S RF switch connector,
commonly used on waveguide switches.
Figure 4-3
shows an outline drawing of a
typical switch connector cable.
Figure 4-5
shows a representation of how the switch
and link cables are connected between the SSPAs and the waveguide switch.